Hi George, I too had a pot on my NEC 8201 that had died, so I fabricated a tray to allow new pots to be used to replace these old ones that aren't made anymore.
More detail here on my first version, if you're interested: http://stuff.bradgrier.com/docs/drop-in-vr1-documentation/how-to-install-the-drop-inn-vr1-replacement-pot/ I do have a newer version in the works that is a bit simpler to work with. Happy to answer any questions... --Brad On Sun, Nov 7, 2021 at 2:57 PM George Goodman <[email protected]> wrote: > FYI, it appears the pot is dead, dead, dead (well, it isn't potentiating, > just letting a rather small bit through). That pot is so small and so very > well soldered to the board that I don't think I can do anything about it. > It appears that this M100 will become my donor. > > My second system arrives this week. > > Thanks for all the help, folks! > > george g. > > --- > Please note that this email is coming from my new account. Change the > contact information you have for me to send emails to > [email protected] > Thanks! > > > On Thu, Nov 4, 2021, at 12:19 PM, George Goodman wrote: > > Hi all, > > My M100 display seems to have taken a turn for the dim. See the images in > this shared folder —> > *https://www.dropbox.com/sh/y1cpftct6dgqy2j/AAAEb3PmIC1b30qh7FV_WX4ea?dl=0 > <https://www.dropbox.com/sh/y1cpftct6dgqy2j/AAAEb3PmIC1b30qh7FV_WX4ea?dl=0> * > > I can’t point to anything that happened. I started an install of TS-DOS > from my Backpack and, once the Initial Program Load began, stepped away > from my desk to get a glass of water. When I returned a few minutes later I > thought the M100 had flat out died. I removed the Backpack and tried > turning the M111 on and off and even did a hard reset. No joy…I thought. > > I happened to sit down at my desk and catch a more extreme viewing angle > of the display. That’s when I realized that there was just a display issue. > I verified that I can start up Basic, make the system beep, open Text, etc. > However, I haven’t found anything that will get the display back to good > viewing from overhead. > > BTW, I did try the contrast dial and that didn’t have any impact. The > images in that shared folder were taken with the contrast at its highest. > > Does anyone have suggestions for debugging and fixing this? > > Thanks, > > george g. > > > -- -- Brad Grier
